A quick update on this. I decided to modify the cancel cam so that it accepts the horn pin assembly that I have. I used a Dremel with a cutoff wheel and then a very tiny drill bit to make a slot. That allowed the spring and pin to be retained and everything works as intended now.
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1966 Pontiac GTO (
restoration thread)
1998 BMW 328is (
track rat)
2023 Subaru Crosstrek Limited (
daily)
View my photos: Caught in the Wild